Pokemon Odyssey is a highly acclaimed FireRed-based GBA ROM hack that blends Pokémon, Etrian Odyssey, and dungeon-crawling exploration into a deep narrative adventure with new mechanics, rebalance systems, and a fresh soundtrack unlike anything seen in typical Pokémon hacks.
Pokemon Odyssey is a complete English-language FireRed ROM hack created by PacoScarso and contributors, offering a fully original narrative set around the mysterious Yggdrasil Labyrinth and the remote island of Talrega.
Instead of traditional Pokémon Gym challenges and Pokémon League progression, Odyssey places players in a world where exploration is central. You play as Nyx, an adventurer drawn into the colossal Yggdrasil Labyrinth — a dungeon complex filled with secrets, powerful creatures, and dangerous unknowns.
The game mixes core Pokémon RPG mechanics with deep dungeon-crawl elements inspired by classic titles like Etrian Odyssey, creating a fresh experience that rewards discovery, careful planning, strategic team-building, and meaningful progression.